update AssetBundleBuilder

1. 移除了资源包构建流程任务节点可扩展功能
2. 新增了构建流程可扩展的方法。

Assets/YooAsset/Editor/AssetBundleBuilder/BuildSystem/ETaskPipeline.cs

@@ -1,22 +0,0 @@
-using System;
-
-namespace YooAsset.Editor
-{
-	public enum ETaskPipeline 
-	{
-		/// <summary>
-		/// 所有的构建管线
-		/// </summary>
-		AllPipeline,
-
-		/// <summary>
-		/// 内置构建管线
-		/// </summary>
-		BuiltinBuildPipeline,
-
-		/// <summary>
-		/// 可编程构建管线
-		/// </summary>
-		ScriptableBuildPipeline,
-	}
-}

Assets/YooAsset/Editor/AssetBundleBuilder/BuildSystem/ETaskPipeline.cs.meta

@@ -1,11 +0,0 @@
-fileFormatVersion: 2
-guid: 32477ef3a448a9144aa1574a052fe54e
-MonoImporter:
-  externalObjects: {}
-  serializedVersion: 2
-  defaultReferences: []
-  executionOrder: 0
-  icon: {instanceID: 0}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 

Assets/YooAsset/Editor/AssetBundleBuilder/BuildSystem/TaskAttribute.cs

@@ -5,28 +5,13 @@ namespace YooAsset.Editor
 	[AttributeUsage(AttributeTargets.Class)]
 	public class TaskAttribute : Attribute
 	{
-		/// <summary>
-		/// 任务所属的构建流水线
-		/// </summary>
-		public ETaskPipeline Pipeline;
-
-		/// <summary>
-		/// 执行顺序
-		/// </summary>
-		public int TaskOrder;
-
 		/// <summary>
 		/// 任务说明
 		/// </summary>
 		public string TaskDesc;
 
-		// 关联的任务类
-		public Type ClassType { set; get; }
-
-		public TaskAttribute(ETaskPipeline pipeline, int taskOrder, string taskDesc)
+		public TaskAttribute(string taskDesc)
 		{
-			Pipeline = pipeline;
-			TaskOrder = taskOrder;
 			TaskDesc = taskDesc;
 		}
 	}